Browse Publications Technical Papers 2019-24-0192
2019-09-09

Efficient Test Bench Operation with Early Damage Detection Systems 2019-24-0192

The efficient operation of powertrain test benches in research and development is strongly influenced by the state of “health” of the functional test object. Hence, the use of Early Damage Detection Systems (EDDS) with Unit Under Test (UUT) monitoring is becoming increasingly popular. An EDDS should primarily avoid total loss of the test object and ensure that damaged parts are not completely destroyed, and can still be inspected. Therefore, any abnormality from the standard test object behavior, such as an exceeding of predefined limits, must be recognized at an early testing time, and must lead to a shutdown of the test bench operation. With sensors mounted on the test object, it is possible to isolate the damage cause in the event of its detection. Advanced EDDS configurations also optimize the predefined limits by learning new shutdown values according to the test object behavior within a very short time.
In this paper, the expectations on an EDDS and its general structure are presented and discussed. The advantages and disadvantages in test bench operation are analyzed and compared with measurement results. Based on the analysis of various test series, it will be shown that shutdowns of the test bench initiated by the EDDS are an effective damage prevention for the UUT. Avoiding major damage to the usually very valuable test objects leads to lower testing costs and increased efficiency of the test bench operation in general. Combining the additional features of an EDDS with conventional damage prevention methods, such as the automated compliance with test-relevant limits and regular analysis of lubricants and coolants, significantly increases the UUT safety.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Knack of Seeking New Mechanisms for Pumping Machinery - The Mechanism Evolution from Plane to Space

930057

View Details

TECHNICAL PAPER

Engine Starting System Development by Belt Drive Mechanism

2002-01-1086

View Details

TECHNICAL PAPER

Design Analysis & Parametric Optimization of Gerotor Oil Pump for Improving Volumetric Efficiency

2016-28-0113

View Details

X